Abstract： Objective:To explore the clinical efficacy and safety of low-temperature plasma radiofrequency ablation(LTPRA)of different levels in the treatment of chronic lumbar facet joint pain,providing theoretical bases for clinical practice.Methods:From February 2021 to February 2022,92 inpatients who underwent LTPRA for chronic lumbar facet joint pain in the Pain Department of the China-Japan Friendship Hospital were divided into the 1st level group(the average power was 13 W and the operative temperature was about 40℃in 51 patients)and the 3rd level group(the average power was 49 W and the operative temperature was about 60℃in 41 patients).The patients'numerical rating scale(NRS)scores,the Oswestry disability index(ODI)scores,the proportion of nonsteroidal antiinflammatory drugs(NSAIDs)and/or opioid drugs used,surgical related complications and patient satisfaction,before surgery,at the 2nd week,the 1st month,the 3rd month,the 6th month and the 12th month after surgery,were respectively followed up and statistically analyzed.Results:Compared with pre-operation,the NRS score and ODI score decreased significantly at the 2nd week,the 1st month,the 3rd month,the 6th month and the 12th month after surgery,with statistical significance.The postoperative drug use rate also decreased.Comapared with the 1st level group,the NRS scores of the 3rd level group was lower from 1st month to 12th month after operation,with statistical significance.The ODI scores of the 3rd level group was also lower than the 1st level group,at 2nd week and from 6th month to 12th month after operation,with statistical significance.More patients in the 3rd level group had short-term postoperative mild complications,but the difference was not statistically significant.Conclusion:For chronic lumbar facet joint pain,both the 1st and 3rd level LTPRA treatments are effective.Compared with the 1st level LTPRA treatment,3rd level LTPRA treatment has better efficacy with longer duration.While mild complications may occur in the short term after surgery,there is no significant difference in postoperative complications.